2. La procédure d'installation (depuis un CD/DVD amorçable)

Démarrer depuis un CD/DVD requiers un processus de démarrage différent comparé à l'amorçage depuis un disque dur. The linux kernel doesnât really know how to boot from a CD-ROM. When booting from a CD-ROM, an initrd (initial ramdisk) is used as the root filesystem. The initrd is loaded by the _boot loader_ - not the kernel. This makes it possible to boot from any device accessible to the bootloader. ISOLINUX is the boot loader commonly used for booting from a CD-ROM.

Processus de démarrage (depuis un CD/DVD):

1. Phase d'initialisation du PC - BIOS, POST.
1. ISOLINUX est invoqué depuis un CD/DVD amorçable (isolinux.bin).
1. ISOLINUX charge le noyau depuis le répertoire du périphérique (le répertoire /isolinux sur le CD/DVD).
1. ISOLINUX charge l'image initrd (initrd.img).
1. The kernel then takes over, and attempts to decompresses the initrd.img into memory (/dev/ram0), and mounts this new filesystem as root (/).
1. The kernel attempts to run /linuxrc in the newly created root filesystem.
1. The linuxrc program then mounts the CD-ROM (by trial and error), and decompresses a 'true' root filesystem from CD-ROM to /dev/ram1.
1. The kernel takes over and mounts the newly configured root filesystem. The new filesystem is mounted and a softlink for the CD-ROM is added to the /dev directory, so that the system has access to the CD-ROM.
1. The kernel runs the /sbin/loader binary which then invokes the anaconda installer.

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